Constanţa climate

Name: Constanţa
Address: RO

Constanţa is warmest in August, with average highs of 27 °C, and coldest in January, when nights average -0.8 °C. June is the wettest month (58 mm) and February the driest (33 mm). Figures are 1991–2020 climate normals.

Across a full year Constanţa averages 519 mm of rain, 69 days above 25 °C and 53 days below freezing.

Romania · population 317,832 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 27 °C
Coldest month January -0.8 °C
Driest month February 33 mm
Wettest month June 58 mm
Least cloud August 28 % cloud
Hottest on record July 37 °C
Coldest on record January -17 °C
Warmest sea August 25 °C

What to expectConstanţa through the year

Constanţa has a clear annual cycle: average daily highs run from 4.7 °C in January to 27 °C in August, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 69 days a year reach 25 °C, 8 of them reach 30 °C, 53 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in July.

Rain is spread fairly evenly through the year, from 33 mm in February to 58 mm in June. There is no dry season to aim for.

The sea off Constanţa is warmest in August at 25 °C and coldest in February at 5.8 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	4.7 °C	41 mm	68 %
February	6.3 °C	33 mm	65 %
March	9.7 °C	43 mm	61 %
April	14.2 °C	39 mm	54 %
May	19.8 °C	49 mm	49 %
June	24.4 °C	58 mm	42 %
July	26.9 °C	41 mm	30 %
August	27.0 °C	36 mm	28 %
September	22.3 °C	50 mm	43 %
October	16.9 °C	44 mm	56 %
November	11.4 °C	42 mm	65 %
December	6.3 °C	43 mm	65 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	4.7 °C	-0.8 °C	1.9 °C	15.8 °C	-16.7 °C	0	0	17
February	6.3 °C	-0.1 °C	3.0 °C	19.1 °C	-12.7 °C	0	0	14
March	9.7 °C	2.7 °C	6.2 °C	24.8 °C	-12.9 °C	0	0	7
April	14.2 °C	6.7 °C	10.6 °C	27.1 °C	-1.7 °C	0	0	0
May	19.8 °C	12.3 °C	16.3 °C	29.3 °C	4.2 °C	1	0	0
June	24.4 °C	17.2 °C	21.0 °C	33.5 °C	10.3 °C	12	1	0
July	26.9 °C	19.5 °C	23.4 °C	36.8 °C	13.1 °C	25	3	0
August	27.0 °C	19.6 °C	23.4 °C	35.4 °C	13.0 °C	24	4	0
September	22.3 °C	15.5 °C	18.9 °C	31.9 °C	7.6 °C	6	0	0
October	16.9 °C	10.8 °C	13.8 °C	27.7 °C	-1.1 °C	1	0	0
November	11.4 °C	5.9 °C	8.6 °C	22.5 °C	-6.2 °C	0	0	2
December	6.3 °C	1.0 °C	3.6 °C	17.3 °C	-12.8 °C	0	0	13

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	41 mm	7	9.2 h/day	68 %	81 %	20 km/h	6.9 °C
February	33 mm	6	10 h/day	65 %	78 %	21 km/h	5.8 °C
March	43 mm	8	12 h/day	61 %	76 %	21 km/h	6.5 °C
April	39 mm	8	13 h/day	54 %	76 %	20 km/h	9.6 °C
May	49 mm	8	15 h/day	49 %	75 %	19 km/h	15.6 °C
June	58 mm	9	15 h/day	42 %	73 %	18 km/h	20.8 °C
July	41 mm	6	15 h/day	30 %	70 %	17 km/h	23.7 °C
August	36 mm	5	14 h/day	28 %	69 %	18 km/h	24.7 °C
September	50 mm	6	13 h/day	43 %	71 %	19 km/h	21.9 °C
October	44 mm	6	11 h/day	56 %	77 %	19 km/h	17.8 °C
November	42 mm	6	9.6 h/day	65 %	80 %	19 km/h	13.5 °C
December	43 mm	7	8.9 h/day	65 %	81 %	20 km/h	9.6 °C

How Constanţa compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Constanţa	27 °C	-0.8 °C	519 mm	69
Varna · Bulgaria	27 °C	-0.2 °C	600 mm	76
Galaţi · Romania	29 °C	-4.0 °C	501 mm	95
Bucharest · Romania	29 °C	-4.7 °C	668 mm	95
Burgas · Bulgaria	28 °C	-0.7 °C	602 mm	87
Ploieşti · Romania	27 °C	-4.9 °C	689 mm	70

Where Constanţa ranks

Ranking	Position	Value
Best beach destinations in Europe in August	17th of 50	95/100
Best beach destinations in Europe in February	24th of 50	19/100
Best beach destinations in Europe in January	25th of 50	18/100
Best beach destinations in Europe in July	29th of 50	92/100
Places with the best weather in Europe in September	29th of 50	94/100
Warmest sea temperatures in Europe in August	32nd of 50	25 °C

Planning a trip? See the best time to visit Constanţa.

QuestionsCommon questions about Constanţa’s climate

When is the best time to visit Constanţa?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, September sit closest to 20 °C on average, August is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Constanţa get?

In August, the warmest month, daily highs average 27 °C. About 8 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average -0.8 °C in January, the coldest month. A normal year has 53 nights below freezing.

Which month is wettest in Constanţa?

June, averaging 58 mm over 9 days with rain. The driest month is February with 33 mm. The year as a whole averages 519 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Constanţa rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 44.181°, 28.634° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.